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Addition of ATP, CaCl2, and KCl to supernatants prepared from mycelia of Snowflake (strain 507), a morphological mutant of Neurospora crassa, results in the formation of filaments 70 nm in diameter. The "decorated" appearance of these filaments after incubation with heavy meromyosin from rabbits suggests they are actin-like.
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Allen et al. (1978) studied this question.
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